榻是床的一种。榻的命名源于形制特点。榻最迟出现于秦代,初期多用于坐而少用于卧,盛行于汉魏六朝,隋唐时代开始渐渐衰落,其功用被床和高型坐具(椅子、凳等)所取代,最后从人们的生活中完全消失。榻和床在功能和形制上有区别,随着榻在各个时期的功用变迁,我国古代有不同的与榻相关的礼仪制度。 Couch is a bed. The name of the couch comes from the characteristics of the system. The couch at the latest appeared in the Qin Dynasty, initially used for sitting and less for lying, prevailing in the Han Wei and the Six Dynasties, Sui and Tang era began to decline, its function was replaced by beds and high-style furniture (chairs, stools, etc.) The life disappeared completely. The couch and bed are different in function and form. As the couch changes in various periods, ancient China has different etiquette systems related to couches.